A:
Positive:
1 x 392720911 x 35701913 x 30209329 x 135421143 x 27463319 x 12311377 x 10417947 x 4147
Negative:
-1 x -3927209-11 x -357019-13 x -302093-29 x -135421-143 x -27463-319 x -12311-377 x -10417-947 x -4147
Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 3,927,209, it is easier to work with a table - it's called factoring from the outside in.
We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.
| 1 | 3,927,209 | |
| -1 | -3,927,209 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 3,927,209.
Example:
1 x 3,927,209 = 3,927,209
and
-1 x -3,927,209 = 3,927,209
Notice both answers equal 3,927,209
With that explanation out of the way, let's continue. Next, we take the number 3,927,209 and divide it by 2:
3,927,209 ÷ 2 = 1,963,604.5
If the quotient is a whole number, then 2 and 1,963,604.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 3,927,209 | |
| -1 | -3,927,209 |
Now, we try dividing 3,927,209 by 3:
3,927,209 ÷ 3 = 1,309,069.6667
If the quotient is a whole number, then 3 and 1,309,069.6667 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 3,927,209 | |
| -1 | -3,927,209 |
Let's try dividing by 4:
3,927,209 ÷ 4 = 981,802.25
If the quotient is a whole number, then 4 and 981,802.25 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 3,927,209 | |
| -1 | 3,927,209 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 29 | 143 | 319 | 377 | 947 | 4,147 | 10,417 | 12,311 | 27,463 | 135,421 | 302,093 | 357,019 | 3,927,209 |
| -1 | -11 | -13 | -29 | -143 | -319 | -377 | -947 | -4,147 | -10,417 | -12,311 | -27,463 | -135,421 | -302,093 | -357,019 | -3,927,209 |
Here are some more numbers to try:
Try the factor calculator